# Anomalies in (semi)-leptonic $B$ decays $B^{\pm} \to \tau^{\pm} \nu$, $B^{\pm} \to D \tau^{\pm} \nu$ and $B^{\pm} \to D^* \tau^{\pm} \nu$, and possible resolution with sterile neutrino

@article{Cvetivc2017AnomaliesI,
title={Anomalies in (semi)-leptonic \$B\$ decays \$B^\{\pm\} \to \tau^\{\pm\} \nu\$, \$B^\{\pm\} \to D \tau^\{\pm\} \nu\$ and \$B^\{\pm\} \to D^* \tau^\{\pm\} \nu\$, and possible resolution with sterile neutrino},
author={Gorazd Cvetivc and Francis Halzen and C. S. Kim and Sechul Oh},
journal={arXiv: High Energy Physics - Phenomenology},
year={2017}
}
• Published 14 February 2017
• Physics
• arXiv: High Energy Physics - Phenomenology
The universality of the weak interactions can be tested in semileptonic $b \to c$ transitions, and in particular in the ratios $R(D^{(*)}) \equiv \Gamma(B \rightarrow D^{(*)} \tau \nu )/\Gamma(B \rightarrow D^{(*)} \ell \nu )$ (where $\ell = \mu$ or $e$). Due to the recent differences between the experimental measurements of these observables by BaBar, Belle and LHCb on the one hand and the Standard Model predicted values on the other hand, we study the predicted ratios $R(D^{(*)}) = \Gamma(B… 21 Citations ## Figures and Tables from this paper Ξb →${\Xi }_{c} \tau \bar {\nu }_{\tau }$Decay in New Physics Models Motivated by several hints of lepton flavor universality (LFU) violation in$b\to c\tau \bar {\nu }_{\tau }$transitions, we investigate the baryonic semi-leptonic Ξb →${\Xi }_{c} \tau \bar {\nu
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Polarization measurements in B → D(∗)τν are useful to check consistency in new physics explanations for the RD and RD∗ anomalies. In this paper, we investigate the D∗ and τ polarizations and focus on